1 | /* Copyright (C) 2007-2018 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either |
7 | version 2.1 of the License, or (at your option) any later version. |
8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ |
17 | |
18 | #include <fcntl.h> |
19 | #include <stdarg.h> |
20 | |
21 | #include <sysdep-cancel.h> |
22 | #include <not-cancel.h> |
23 | |
24 | #ifdef __OFF_T_MATCHES_OFF64_T |
25 | # define 0 |
26 | #else |
27 | # define EXTRA_OPEN_FLAGS O_LARGEFILE |
28 | #endif |
29 | |
30 | /* Open FILE with access OFLAG. Interpret relative paths relative to |
31 | the directory associated with FD. If OFLAG includes O_CREAT or |
32 | O_TMPFILE, a fourth argument is the file protection. */ |
33 | int |
34 | __libc_openat64 (int fd, const char *file, int oflag, ...) |
35 | { |
36 | mode_t mode = 0; |
37 | if (__OPEN_NEEDS_MODE (oflag)) |
38 | { |
39 | va_list arg; |
40 | va_start (arg, oflag); |
41 | mode = va_arg (arg, mode_t); |
42 | va_end (arg); |
43 | } |
44 | |
45 | return SYSCALL_CANCEL (openat, fd, file, oflag | EXTRA_OPEN_FLAGS, mode); |
46 | } |
47 | |
48 | strong_alias (__libc_openat64, __openat64) |
49 | libc_hidden_weak (__openat64) |
50 | weak_alias (__libc_openat64, openat64) |
51 | |
52 | #if !IS_IN (rtld) |
53 | int |
54 | __openat64_nocancel (int fd, const char *file, int oflag, ...) |
55 | { |
56 | mode_t mode = 0; |
57 | if (__OPEN_NEEDS_MODE (oflag)) |
58 | { |
59 | va_list arg; |
60 | va_start (arg, oflag); |
61 | mode = va_arg (arg, mode_t); |
62 | va_end (arg); |
63 | } |
64 | |
65 | return INLINE_SYSCALL_CALL (openat, fd, file, oflag | EXTRA_OPEN_FLAGS, |
66 | mode); |
67 | } |
68 | #else |
69 | strong_alias (__libc_openat64, __openat64_nocancel) |
70 | #endif |
71 | libc_hidden_def (__openat64_nocancel) |
72 | |
73 | #ifdef __OFF_T_MATCHES_OFF64_T |
74 | strong_alias (__libc_openat64, __openat) |
75 | libc_hidden_weak (__openat) |
76 | weak_alias (__libc_openat64, openat) |
77 | |
78 | strong_alias (__openat64_nocancel, __openat_nocancel) |
79 | #endif |
80 | |